Vulnerability · Published Aug 19, 2026 · Assigned by VulnCheck

CVE-2026-76212phpMyFAQ before 4.1.7 LIKE Wildcard Injection via PostgreSQL

Medium 5.3

In plain English

A medium-severity argument injection in phpMyFAQ from thorsten. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 62.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

phpMyFAQ before 4.1.7, when configured to use PostgreSQL via the native pgsql PHP extension, declares an incorrect LIKE ESCAPE character ('=') in the Search/Database/Pgsql.php backend while escapeLikeWildcards() escapes user input with the '|' prefix. As a result, wildcard escaping is a no-op and user-supplied % and _ characters remain active LIKE wildcards. An unauthenticated attacker can submit such characters in the public FAQ search form to force maximally broad pattern matches and expensive sequential scans, resulting in a denial of service. The PDO PostgreSQL backend is not affected, and quotes remain escaped so this does not enable quote-breaking SQL injection or data exfiltration.

Affected products (as reported)

Vendor	Product	Versions
thorsten	phpMyFAQ	4.2.0-alpha – before 4.1.7

Weakness: CWE-88 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-5hx6-c293-588h) vendor-advisory
VulnCheck Advisory: phpMyFAQ before 4.1.7 LIKE Wildcard Injection via PostgreSQL third-party-advisory